论文标题
各向异性对石墨烯相变的影响
The effect of anisotropy on phase transitions in graphene
论文作者
论文摘要
我们研究各向异性（应变）对石墨烯中动态间隙产生的影响。我们使用从较紧密的哈密顿人获得的低能效率理论，该理论在动量空间中的狄拉克点附近扩展。我们使用非扰动的schwinger-dyson方法，并计算一组五个动量依赖的敷料功能。我们的结果表明，临界耦合仅弱取决于各向异性参数，并且随着各向异性的增加而增加。
We study the effect of anisotropy (strain) on dynamical gap generation in graphene. We work with a low energy effective theory obtained from a tight-binding Hamiltonian expanded around the Dirac points in momentum space. We use a non-perturbative Schwinger-Dyson approach and calculate a coupled set of five momentum dependent dressing functions. Our results show that the critical coupling depends only weakly on the anisotropy parameter, and increases with greater anisotropy.
